12012000202121 has 4 divisors (see below), whose sum is σ = 12017109519744. Its totient is φ = 12006890884500.

The previous prime is 12012000202093. The next prime is 12012000202157. The reversal of 12012000202121 is 12120200021021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012000202121 - 2⁶ = 12012000202057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012000202096 and 12012000202105.

It is not an unprimeable number, because it can be changed into a prime (12012000202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2554655285 + ... + 2554659986.

It is an arithmetic number, because the mean of its divisors is an integer number (3004277379936).

Almost surely, 2^{12012000202121} is an apocalyptic number.

It is an amenable number.

12012000202121 is a deficient number, since it is larger than the sum of its proper divisors (5109317623).

12012000202121 is an equidigital number, since it uses as much as digits as its factorization.

12012000202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109317622.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12012000202121 its reverse (12120200021021), we get a palindrome (24132200223142).

The spelling of 12012000202121 in words is "twelve trillion, twelve billion, two hundred two thousand, one hundred twenty-one".